Optical force decoration of 3D microstructures with plasmonic particles | Zendy

M. G. Donato | Zendy; Vijayakumar P. Rajamanickam | Zendy; Antonino Foti | Zendy; P. G. Gucciardi | Zendy; Carlo Liberale | Zendy; Onofrio M. Maragò | Zendy

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Optical force decoration of 3D microstructures with plasmonic particles

Author(s) -

M. G. Donato,

Vijayakumar P. Rajamanickam,

Antonino Foti,

P. G. Gucciardi,

Carlo Liberale,

Onofrio M. Maragò

Publication year - 2018

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.43.005170

Subject(s) - plasmon , nanorod , materials science , raman scattering , optics , raman spectroscopy , nanosensor , microstructure , surface plasmon , surface enhanced raman spectroscopy , nanotechnology , optoelectronics , physics , composite material

Optical forces are used to push and aggregate gold nanorods onto several substrates creating surface-enhanced Raman scattering (SERS) active hot spots for Raman-based identification of proteins. By monitoring the increase of the protein SERS signal, we observe different aggregation times for different curvatures of the substrates. The slower aggregation dynamics on curved surfaces is justified by a simple geometrical model. In particular, this technique is used to decorate three-dimensional microstructures and to quickly realize hybrid micro/nanosensors for highly sensitive detection of biological material directly in a liquid environment.

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